Microwave oven



FIG. 1 is a perspective view of a microwave oven showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side view thereof,

FIG. 7 is a left side view thereof;

FIG. 8 is a perspective view thereof showing a state with a door open; and,

FIG. 9 is a sectional view taken along line 9—9 in FIG. 2. 

The ornamental design for a microwave oven, as shown and described. 